JP3617052B2 - Camera image providing system and camera image time correction method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a camera image providing system and a camera image time axis correction method, and in particular, provides a user with the same time axis of images taken by a plurality of cameras, and corrects the shooting time of the images taken by the cameras. Regarding technology.
[0002]
[Prior art]
In recent years, home video cameras (hereinafter referred to as “home cameras”) have become widespread and widely used. Such a home camera has a function of outputting a video signal of the shot video to the outside in addition to a function of displaying the shot video on its own display device.
[0003]
The video signal from the home camera can be taken into a personal computer, for example. The video editing software operating on the personal computer can edit the video based on the captured video signal.
[0004]
By the way, the above-described editing is mostly performed on a video captured from one home camera. On the other hand, in a movie, a scene can be shot separately with a plurality of professional cameras, and a plurality of videos captured from the plurality of professional cameras can be connected and edited to create a story-like video. Has been done.
[0005]
[Problems to be solved by the invention]
However, in a home camera, the time axis of a plurality of camera images is often not accurate due to a deviation from the actual time because the built-in clock is not set to an accurate time. For this reason, video taken with a home camera cannot be edited continuously on the same time axis, and video omissions and duplication occur, making the video awkward and noticeable. There is a problem that it is not able to endure viewing because the sound is repeated.
[0006]
Therefore, there is a demand for editing a plurality of videos on an accurate time axis. There has also been a desire to view videos of different angles at the same time in one scene.
[0007]
The present invention has been made in order to solve the above-mentioned problems and to meet the above-mentioned demands, and an object of the present invention is to provide a camera image providing system capable of accurately aligning the time axes of camera images and the time axis of camera images. It is to provide a correction method.
[0008]
[Means for Solving the Problems]
The present invention collects, on a computer, a plurality of videos obtained by a plurality of users shooting a single event such as an athletic meet with a plurality of cameras, and provides them to the user as contents. More specifically, the video time axis correction method that accurately aligns the time axes of a plurality of stored videos and the video images that can be edited and switched between video angles are provided by arranging the video time axes in a band. This is a provision system. It can be used as a tool for collaborative shooting and video editing in communities such as regions, schools, and housing complexes.
[0009]
That is, the camera image providing system according to the first aspect of the present invention provides a plurality of cameras and an information processing device that aligns the time axes of the plurality of images captured by the plurality of cameras, in order to achieve the above-described object, And.
[0010]
The information processing apparatus in this camera video providing system can be configured to align time axes by matching the plurality of videos based on information associated with each of the plurality of videos. In this case, the associated information can comprise a sound waveform. Further, the information processing apparatus in the camera video providing system can be configured to set a mark in a portion where the plurality of videos are matched.
[0011]
The information processing apparatus in the camera video providing system includes a first clock, each of the plurality of cameras includes a second clock, and the information processing apparatus includes a current time indicated by the first clock and the first clock. 2. Correct the shooting time of the plurality of images from the plurality of cameras based on the correction value representing the difference from the current time indicated by the two clocks, and thereby set the time axes of the plurality of images captured by the plurality of cameras. Can be configured to align.
[0012]
The information processing apparatus in the camera video providing system includes a plurality of information processing devices connected via a network, and the time of the first clock provided in each of the plurality of information processing devices is stored in the network. It can be configured to be set from another connected information processing apparatus.
[0013]
In this case, the plurality of information processing devices can be configured to send at least a video and a shooting time of the video to the other information processing apparatus via the network. Further, the plurality of information processing devices can be configured to further send the correction value to the other information processing apparatus. In these cases, the photographing time can be the photographing time corrected by the correction value.
[0014]
Further, the information processing apparatus in the camera video providing system can be configured to generate at least one video edited so that the shooting times are continuous based on a plurality of videos having the same time axis. The information processing apparatus may be configured to generate at least one image by processing a plurality of images having the same shooting time among a plurality of images having the same time axis so as to be switched and connected.
[0015]
Furthermore, in this camera image providing system, each of the plurality of cameras includes a built-in clock having a self-correcting function, and the information processing apparatus is photographed by the plurality of cameras based on times indicated by the built-in clock. It can be configured to align the time axes of multiple videos.
[0016]
In this case, the information processing apparatus includes a plurality of information processing devices connected via a network, and the plurality of information processing devices transmits at least a video and a shooting time of the video via the network to another information processing device. Can be configured to send to The information processing apparatus may be configured to generate at least one video edited so that the shooting times are continuous based on a plurality of videos having the same time axis. In addition, the information processing apparatus can be configured to generate at least one video by processing a plurality of videos having the same shooting time among a plurality of videos having the same time axis to be switched and connected. In these cases, the built-in clock can be constituted by a radio clock. Further, each of the plurality of cameras includes a network interface unit for connecting to a network, and the internal clock is set with time from the other information processing apparatus connected to the network via the network interface unit. Can be configured.
[0017]
A camera image providing system according to a second aspect of the present invention includes an information processing device including a first clock having a self-correcting function and a camera including a second clock for the same purpose as described above. The information processing apparatus corrects a shooting time of a video shot by the camera based on a difference between a current time indicated by the first clock and a current time indicated by the second clock, and the corrected shooting time is determined. It is comprised so that the image | video which it has may be provided.
[0018]
According to the camera image providing system according to the second aspect, since the first clock has a self-correcting function, the actual time can always be obtained from the first clock. Since the shooting time of the video shot by the camera is corrected based on the difference between the current time indicated by the first clock and the current time indicated by the second clock, a video having an accurate shooting time can always be provided.
[0019]
In addition, in the camera video time base correction method according to the third aspect of the present invention, for the same purpose as described above, a plurality of videos taken by a plurality of cameras are input, and each of the input plurality of videos is input. The plurality of videos are matched based on the information associated with the video, and the time axes of the matched videos are aligned. In this case, the associated information can comprise a sound waveform.
[0020]
Further, in the camera video time base correcting method according to the third aspect, a mark can be set at a portion where the plurality of videos are matched.
[0021]
In the camera image time base correction method according to the third aspect, the current time indicated by the first clock is read, the current times indicated by the second clocks provided in the plurality of cameras are read, and the first timepiece is read. Calculating the difference between the current time indicated by the second clock and the current time indicated by the second clock, and correcting the shooting times of the plurality of videos from the plurality of cameras using the calculated difference as a correction value, It is possible to configure so that the time axes of a plurality of videos taken by the camera are aligned.
[0022]
In this case, the step of correcting the shooting time can be configured to correct the shooting time based on at least the video and the shooting time of the video. In this case, the step of correcting the shooting time can be further configured to correct the shooting time based on the correction value. Further, the photographing time can be configured from the photographing time corrected by the correction value.
[0023]
In the camera video time base correction method according to the third aspect, at least one video edited so that the shooting times are continuous is generated based on the plurality of videos having the same time axis. Can be configured. Furthermore, in the time axis correction method for a camera image according to the second aspect, at least a plurality of images having the same shooting time among the plurality of images with the same time axis are switched and connected to each other. It can be configured to generate one video.
[0024]
Furthermore, the camera image time base correction method according to the fourth aspect of the present invention is the same as described above, and the current time indicated by the first timepiece having a self-correcting function and the second timepiece included in the camera indicate A difference from the current time is calculated, and the shooting time of the video shot by the camera is corrected based on the calculated difference.
[0025]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Note that a home video camera used in the following embodiments (hereinafter sometimes simply referred to as “camera”) adopts the DV (Digital Video) standard. As the DV standard, “INTERNATIONAL STANDARD” (CEI / IEC 61883-2: 1998) can be adopted.
[0026]
(Embodiment 1)
FIG. 1 is a block diagram showing a configuration of a camera video supply system according to Embodiment 1 of the present invention. The camera video supply system includes an Internet 10, a server 20 connected to the Internet 10, and a plurality of personal computers (hereinafter also abbreviated as “PC”) 30, 31, and 32. The home video cameras 40, 41, and 42 are connected to the plurality of personal computers 30, 31, and 32, respectively.
[0027]
The information processing apparatus according to the present invention corresponds to the server 20 and the plurality of personal computers 30, 31 and 32. The information processing apparatus according to the present invention corresponds to the personal computers 30, 31 and 32.
[0028]
In this camera video supply system, the Internet 10 is used as a network. However, the present invention is not limited to the Internet, and various networks can be used.
[0029]
The server 20 comprehensively controls this camera video supply system. As the server 20, various information processing apparatuses such as a server computer, a workstation, and a general-purpose computer can be used. The server 20 has a built-in clock. The time of the built-in clock is used as a reference time for the camera video supply system.
[0030]
The personal computers 30, 31, and 32 take in information from the cameras 40, 41, and 42, respectively, and perform various processes. Details of processing performed by the personal computers 30, 31, and 32 will be described later. Of course, other information processing apparatuses can be used in place of the personal computers 30, 31 and 32.
[0031]
Each of the personal computers 30, 31, and 32 has a built-in clock, and is used to calculate the correction time Δ, as will be described later. Note that the clock used in the personal computers 30, 31, and 32 is not limited to the built-in clock, and any clock can be used as long as the personal computers 30, 31, and 32 can know the time.
[0032]
Cameras 40, 41 and 42 are connected to personal computers 30, 31 and 32, respectively. The connection is performed using a wireless cable such as an IEEE 1394 standard (including a similar standard such as i · Link) cable, an analog video signal cable, or Bluetooth.
[0033]
The server 20 and the personal computers 30, 31 and 32 may be the same information processing apparatus. In that case, as shown in FIG. ₁ ~ 30 _n Multiple cameras 40 in order ₁ ~ 40 _n Or a plurality of cameras 40 in one information processing device 30 as shown in FIG. ₁ ~ 40 _n Can be configured to connect. As shown in FIG. 4, there are a case where a plurality of cameras are connected to an information processing apparatus, and a case where a plurality of cameras are connected at the same time, and a case where only one camera is connected while sequentially replacing the plurality of cameras. .
[0034]
Further, in the camera video providing system according to this embodiment, the information processing apparatus is used for recording, which is recorded on the tape stored in the camera and the ID of the camera connected to the information processing apparatus. It can be configured to acquire camera IDs and manage them in association with video. According to this configuration, since the consistency between the camera and the tape can be confirmed when the shooting time is corrected, it is possible to prevent time correction from being performed erroneously.
[0035]
With the above configuration, the operation of the camera video supply system according to the embodiment of the present invention will be described.
[0036]
First, the user connects the personal computers 30, 31 and 32 to the server 20, and sets the time of the internal clock of the personal computers 30, 31 and 32 to the time of the internal clock of the server 20. The time of the internal clock of the server 20 is always set to the correct time using a radio clock, an NTT time signal service, NTP (Network Time Protocol) which is a protocol for synchronizing the time on the Internet, and the like. Is desirable. Note that NTP is defined in RFC1305.
[0037]
Next, the user connects the cameras 40, 41 and 42 to the personal computers 30, 31 and 32. This completes the setting of the camera video supply system.
[0038]
When the above setting is completed, “images” taken by the cameras 40, 41, and 42 are sent to the personal computers 30, 31, and 32, respectively. At this time, the “shooting time” added to each video is also sent to the personal computers 30, 31 and 32. Next, the “current time” of the built-in clock of the cameras 40, 41 and 42 is sent to the personal computers 30, 31 and 32, respectively. Note that the order of sending the “video”, “shooting time”, and “current time” is not limited to the above and is arbitrary. Further, these “video”, “shooting time”, and “current time” may be configured to be sent a plurality of times.
[0039]
The personal computers 30, 31 and 32 calculate the difference between the current time of the camera obtained from the cameras 40, 41 and 42 and the current time of the internal clock of the personal computers 30, 31 and 32. This calculated difference is called a correction time Δ. The personal computers 30, 31 and 32 store the calculated correction time Δ in association with the images obtained from the cameras 40, 41 and 42.
[0040]
Note that a camera other than the DV standard does not have a function of outputting the current time of the built-in clock to the outside. In this case, the current time of the camera can be acquired by the following method. That is, the camera normally has a function of superimposing the time on the video during video playback or shooting. The camera sends the video with time to the personal computer.
[0041]
The personal computer recognizes the time display superimposed on the video by using character recognition and a method of detecting the timing when the character changes, and obtains the current time. Then, the personal computer calculates the difference between the current camera time and the current time of the internal clock of the personal computer, thereby obtaining the correction time Δ. The shooting time of the video is also obtained by character recognition of the time display on the video at the time of shooting.
[0042]
The above-described method for obtaining the current time and video shooting time will be described in more detail by taking the camera 40 connected to the personal computer 30 as an example. First, the current time is displayed on the camera 40 to take a picture, and an image obtained by this photography is sent to the personal computer 30. In this case, it is preferable that the camera 40 captures a still subject and displays the time on the still image. As a result, the personal computer 30 can easily identify the area where the screen changes every second (or one minute).
[0043]
Next, the personal computer 30 scans the screen to obtain an image at a predetermined time and an image after a lapse of 1 second from the predetermined time, and compares these to find a changing portion. This operation is repeated for several seconds (or minutes) to detect a portion where the image always changes periodically and a portion having the same color. Then, the detected part is recognized as the time display area (strictly, the last part of the time display area).
[0044]
Note that the personal computer 30 may be configured such that the user can specify a region with a pointer linked to a mouse, for example, if the location where the time is displayed cannot be specified or if necessary.
[0045]
When recognizing the time display area, the recognition is started from a portion where the change of the character representing the time is large. Then, the timing at which the screen color changes at that portion is measured to obtain an interval of 1 second. When correcting in seconds, measure in milliseconds.
[0046]
When an interval of 1 second is obtained, timing is started from a temporary time reference value, for example, “00:00:01”, and increment is started at the obtained interval of 1 second. Next, the video is stopped and the temporary time at that time is recorded. In this case, the timing is continued without stopping the temporary time.
[0047]
Next, characters are recognized two digits at a time when the video is stopped. For character recognition, a character recognition method used in existing optical character recognition (OCR) or the like can be used. Since the characters can be specified in 15 ways of “0” to “9”, “:”, “,” “hour”, “minute” and “second”, a high recognition rate can be obtained. The recognized character is preferably displayed on the personal computer 30 so that the user can confirm it.
[0048]
In this character recognition, when the screen changes at a cycle of 1 second, a maximum of 8 characters (hour, minute and second numbers are displayed in two digits) are recognized. If the screen changes at a cycle of 1 minute, 5 digits are recognized. The division between the hour, minute, and second is determined by recognizing “:”, “,”, “hour”, “minute”, and “second”.
[0049]
Next, “recognized time—temporary time when video is stopped” is calculated, and the result is added to the temporary time, whereby the current time of the camera 40 is obtained.
[0050]
Next, each personal computer 30, 31, and 32 sends the video, the shooting time, and the correction time Δ to the server 20. The server 20 calculates an accurate shooting time of the video based on the plurality of videos sent from the plurality of personal computers 30, 31 and 32, the shooting time, and the correction time Δ. Then, as conceptually shown in FIG. 2, a plurality of videos are arranged in parallel on the same time axis and used for editing and processing by the user.
[0051]
The user can edit and process the video by connecting the video at an accurate time by selecting a desired video from the videos arranged in parallel on the time axis. For example, as shown in Fig. 3, A was taking a picture of his son from the starting point at the athletic meet, so the scene on the way could not be taken well with a fence etc. Suppose A's son was reflected. Similarly, suppose that Mr. A's son was also reflected in the video that Mr. C was taking. When such a situation occurs, the images taken by the cameras of Mr. A, Mr. B, and Mr. C can be connected in an accurate time and edited as one image.
[0052]
As described above, according to the camera image providing system according to Embodiment 1 of the present invention, it is possible to edit scenes obtained by connecting a plurality of scenes taken with a plurality of cameras in an accurate time. It is possible to reproduce the state of the movie, and to create a high-quality video like a professional movie with A's son as the main character.
[0053]
In addition, according to the camera video providing system according to the first embodiment, the user can view a video at a certain time as multifaceted angle and position information based on videos arranged in parallel on the time axis. it can. For example, accurate information can be grasped because it is possible to view an accurate video of the passage of time, the shaking of the area, and the damage situation during an earthquake or eruption.
[0054]
Conventionally, in order to shoot a three-dimensional image, a plurality of still cameras are arranged so as to surround the object 360 °, and the shutter is simultaneously pressed to continuously shoot. The images are created by sticking them one by one. If the camera video providing system according to the first embodiment is used, a video camera can be used, and even if shooting is performed without worrying about the shooting start time of each video camera, the shooting time of each video is accurately adjusted after shooting. It is possible to obtain images from various viewpoints easily.
[0055]
The user downloads one video obtained by editing and processing a plurality of videos on the server as described above to the personal computers 31, 32 and 33, and writes it to a tape or a disk as necessary. Can do. This makes it possible to obtain a new video with higher added value than the video originally taken by the user.
[0056]
In the first embodiment described above, each personal computer 31, 32, and 33 is configured to send an image, a shooting time, and a correction time Δ to the server 20 and calculate an accurate shooting time on the server 20. The personal computers 31, 32, and 33 calculate the accurate shooting time based on the video, the shooting time, and the correction time Δ, and rewrite the shooting time information, and the video and the rewritten shooting time are sent to the server 20. Can be configured to send. In this case, the load on the server 20 and the Internet 10 can be reduced.
[0057]
Alternatively, each personal computer 30, 31 and 33 does not capture images from the cameras 41, 42 and 43, but only captures the current time and photographing time, corrects the photographing time as described above, and corrects the photographing time. Can be written back to the video in the cameras 41, 42 and 43, more specifically, to the shooting time information part attached to the video on the DV tape.
[0058]
(Embodiment 2)
The second embodiment of the present invention is a camera video providing system that employs a time axis correction method for adjusting the time of each video without using the correction time Δ in the first embodiment.
[0059]
This time axis correction method is used when the correction time Δ cannot be obtained or for verifying whether the correction time Δ is correct. When the correction time Δ cannot be obtained, the time of the camera's built-in clock is shot by playback using a device (video camera or VCR) that is different from the camera used for shooting, or by resetting the time. This is the case when it has changed from time or when it does not have time information such as an 8 mm film.
[0060]
The configuration of the camera video providing system according to the second embodiment is the same as that of the first embodiment shown in FIG.
[0061]
In the DV standard cameras 40, 41, and 42, when uploading a plurality of videos obtained by photographing the same event with a plurality of cameras to the server 20 via the personal computers 30, 31, and 32, the videos are respectively Time information at the time of shooting can be acquired.
[0062]
The server 20 performs element matching with other videos based on the video A shot for the longest time among the videos uploaded to the server 20 in the initial stage.
[0063]
Here, element matching will be described. When the same event is shot by a plurality of cameras, common elements are included in each video. This common element is searched for the coincidence point on the time axis of the video, which is element matching in this specification.
[0064]
Element matching can be performed using audio, video, or both audio and video. In the case of performing element matching, the user roughly designates a frame having a matching time from the video of each camera using a user interface (UI). Then, the server 20 automatically searches for an exact coincidence point of audio, video, or both audio and video near the designated frame.
[0065]
In the case of performing element matching by sound, for example, the sound waveform of a pistol for an athletic meet or the sound waveform of champagne opening at a wedding can be used. When performing element matching on a video, it is possible to use a noticeable change in the color of an image that appears at the moment when a ball is broken at an athletic meet, a flashing blink pattern that appears continuously in a scene of a cake sword at a wedding ceremony, or the like.
[0066]
The time coincidence analysis can be performed as follows. The change pattern of the volume, the average color of the video, or the average luminance is normalized or binarized with an appropriate threshold. Then, the degree of coincidence between the obtained time series patterns in a certain section is obtained while shifting the patterns, and the point having the highest degree of coincidence is searched for. When that point is required, the time axis shift between the images is obtained. An example of the calculation of the degree of coincidence is described in, for example, “Web Sync: A system for Synchronization of Analog Media and WWW” (H. Matoba, T. O. Has been.
[0067]
In such element matching, if at least one matching point between the video A and the video B is determined, the time information recorded in the video A is used as a temporary reference, and the time of the video B is set as the temporary reference of the video A. According to the time, that is, each video can be arranged on the same time axis. If a plurality of matching points can be determined between the video A and the video B, more accurate time axis alignment is possible, and the probability of occurrence of a correction error due to a matching error can be reduced.
[0068]
In the same manner, element matching is sequentially performed with the images C, D, and E, and time correction is performed using the shooting time of the image A as a temporary reference. If the same matching part appears in any captured video at any time, it can be regarded as a characteristic scene at the captured event. Accordingly, in the subsequent matching, it is only necessary to search for a matching portion by focusing on the scene, so that the efficiency of the matching process is improved.
[0069]
That is, it is not necessary to search for a matching portion for all the shot images from the start to the end of shooting. For example, if it is a wedding reception, the bride and groom entrance, which is one of the characteristic scenes, is in the initial stage of shooting, so if you search for a matching part focusing on this scene, the efficiency of the matching process will be greatly improved. Can do.
[0070]
The above process is repeated to match all the times of the captured video of the same target event with the video A. If at least one matching point can be determined for all the videos, all the videos can be arranged on the same time axis.
[0071]
If there is a photographed video for which a matching location cannot be obtained for video A, matching may be performed based on another video in which the matching location exists. For example, if video C cannot be matched with video A as a reference, video B and video C that already have matching points are matched, or video C and video D are matched before video D and video D are matched. It is possible to arrange all the videos on the same time axis by matching the video A or the like.
[0072]
Note that a video for which no matching portion is found for any video can be regarded as a video that is unlikely to be used during editing. Therefore, such an image can be excluded as editing material.
[0073]
Further, when searching for a matching part of a video, a bookmark can be set at the searched matching part, and the video with the bookmark set can be saved. According to this configuration, it is possible to increase the efficiency of searching for a matching portion when editing video by connecting videos of different angles.
[0074]
In the camera video providing system according to the present invention, the shooting time does not necessarily have to be accurate, but in order to obtain an accurate shooting time of the video, it is acquired from each video at a portion where there are many matching portions of each video. The mode value and the average value of the shooting time information obtained can be regarded as the accurate time, and can be set as the shooting time of each video.
[0075]
(Embodiment 3)
Embodiment 3 of the present invention is a camera image providing system using a camera having a self-correcting function for accurately adjusting time.
[0076]
The configuration of the camera video providing system according to the third embodiment is the same as that of the first embodiment shown in FIG. The difference from the first embodiment is that the personal computers 30, 31 and 32 and the server 20 do not perform time axis correction by adding a function for accurately adjusting the time to the cameras 40, 41 and 42.
[0077]
The cameras 40, 41 and 42 have a built-in radio clock that acquires Japan standard time from standard radio waves and adjusts the time accurately. The cameras 40, 41 and 42 measure the time using this radio clock as a built-in clock. Therefore, the time information attached to the images sent from the cameras 40, 41 and 42 to the sending personal computers 30, 31 and 32 is very accurate and does not need to be corrected.
[0078]
The personal computers 30, 31 and 32 send the images from the cameras 40, 41 and 42 to the server 20 as they are. As conceptually shown in FIG. 2, the server 20 arranges a plurality of videos in parallel on the same time axis based on the shooting time added to the videos, and uses them for editing and processing by the user.
[0079]
With this configuration, the cameras 40, 41, and 42 can provide the user with a plurality of videos with the same time axis by simply transmitting the video and shooting time to the server 20. Accordingly, the processing of accurately adjusting the time of the personal computers 30, 31, and 32, calculating the correction time Δ from the current time of the cameras 40, 41, and 42, and obtaining the accurate shooting time from the shooting time and the correction time Δ. Is no longer necessary.
[0080]
The camera image providing system according to the third embodiment can be modified as follows. That is, the cameras 40, 41 and 42 of the camera image providing system according to this modification include a built-in clock that can adjust the normal time instead of a radio clock, and further, for example, using a wireless line such as Bluetooth or an existing wired line It has a network interface that connects to the Internet. Then, the Internet is accessed periodically or as necessary, and the internal clock is set to the correct time using NTP. Thereby, there exists an effect | action and effect equivalent to the case where a radio timepiece is incorporated.
[0081]
As described above, according to the camera image providing system according to the embodiment of the present invention, it is possible to provide a user with the time of a plurality of images accurately, so that an image in which things are progressing accurately in time. Can be edited, and you can know exactly the changes at other points at the same time.
[0082]
【The invention's effect】
As described above in detail, according to the present invention, it is possible to provide a camera video providing system and a video time axis correction method capable of providing a camera video with time axes accurately aligned.
[0083]
The scenes taken by multiple cameras can be edited by connecting them in precise time, so you can reproduce the state that things are progressing along the precise time, and high quality images like professional movies Can be created.
[0084]
In addition, since the user can view the video at a certain time as multifaceted angle and position information based on the video arranged in parallel on the time axis, for example, the time elapses during an earthquake or eruption. You can see accurate images of local shaking and damage, and get accurate information.
[0085]
Also, in order to shoot 3D images, you can use a video camera instead of using multiple conventional still cameras, and shoot without worrying about the shooting start time of each video camera. Even so, the shooting time of each video can be accurately set after shooting, so that a video with a multifaceted viewpoint can be easily obtained.
[0086]
In addition, one video obtained by editing and processing multiple videos can be written to tape or disk as needed, so new video with higher added value than the video originally taken by the user Can be obtained.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of a camera video supply system according to Embodiment 1 of the present invention.
FIG. 2 is an explanatory diagram conceptually showing a state in which a plurality of videos are arranged in parallel on the same time axis in the camera video supply system according to Embodiment 1 of the present invention.
FIG. 3 is a diagram for explaining the operation of the camera video supply system according to Embodiment 1 of the present invention.
FIG. 4 is a diagram for explaining another configuration of the camera video supply system according to Embodiment 1 of the present invention.
FIG. 5 is a diagram for explaining still another configuration of the camera video supply system according to Embodiment 1 of the present invention.
[Explanation of symbols]
10 Internet
20 servers
30, 31, 32 Personal computer
40, 41, 42 cameras

Claims (15)

Multiple cameras,
An information processing device that aligns the time axes of a plurality of images taken by the plurality of cameras ,
The information processing apparatus includes a first watch.
Each of the plurality of cameras includes a second watch.
The information processing device corrects shooting times of a plurality of videos from the plurality of cameras based on a correction value representing a difference between a current time indicated by the first clock and a current time indicated by the second clock, Therefore, align the time axis of the plurality of images taken by the plurality of cameras,
Camera image providing system. The information processing apparatus comprises a plurality of information processing devices connected by a network,
The time of the first clock provided in each of the plurality of information processing devices is set from another information processing device connected to the network.
The camera image providing system according to claim 1 . The plurality of information processing devices send at least a video and a shooting time of the video to the other information processing apparatus via the network.
The camera image providing system according to claim 2 . The plurality of information processing devices further send the correction value to the other information processing apparatus.
The camera image providing system according to claim 3 . The shooting time is a shooting time corrected by the correction value.
The camera image providing system according to claim 3 . Multiple cameras,
An information processing device that aligns the time axes of a plurality of images taken by the plurality of cameras ,
The information processing device aligns the time axis by matching the plurality of images, and sets a mark in a portion where the plurality of images are matched.
Camera image providing system. Multiple cameras,
An information processing device that aligns the time axes of a plurality of images taken by the plurality of cameras ,
The information processing apparatus aligns the time axis by matching audio information included in each of the plurality of videos, and sets a mark in a portion where the matching of the plurality of videos is obtained.
Camera image providing system. Input multiple images shot by multiple cameras,
Take the matching of the previous Symbol plurality of video,
Allen-Bradley time axis of the plurality of images the matching is taken,
A mark is set in a portion where the matching of the plurality of images is obtained;
Time base correction method for camera video. Input multiple images shot by multiple cameras,
Take the matching of audio information included in each of the previous SL plurality of images,
Allen-Bradley time axis of the plurality of images the matching is taken,
A mark is set in a portion where the matching of the plurality of images is obtained;
Time base correction method for camera video. Input multiple images shot by multiple cameras,
Read the current time indicated by the first clock,
Read the current time indicated by the second clock provided in the plurality of cameras,
Calculating the difference between the current time indicated by the first clock and the current time indicated by the second clock;
Correcting the shooting times of a plurality of videos from the plurality of cameras using the calculated difference as a correction value, thereby aligning the time axes of the plurality of videos shot by the plurality of cameras;
Time base correction method for camera video. The step of correcting the shooting time corrects the shooting time based on at least the video and the shooting time of the video,
The method for correcting a time axis of a camera image according to claim 10 . The step of correcting the shooting time further corrects the shooting time based on the correction value.
The method of correcting a time axis of a camera image according to claim 11 . The shooting time is a shooting time corrected by the correction value.
The method of correcting a time axis of a camera image according to claim 11 . 14. The time base correction method for a camera video according to claim 8 , wherein at least one video edited so that shooting times are continuous is generated based on the plurality of videos having the same time axis. . 14. The method according to claim 8 , wherein a plurality of images having the same shooting time among the plurality of images having the same time axis are switched and connected to generate at least one image. , Time base correction method for camera video.

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